Global Patent Index - EP 2464018 A1

EP 2464018 A1 20120613 - ENCODING METHOD, DECODING METHOD, ENCODING DEVICE AND DECODING DEVICE

Title (en)

ENCODING METHOD, DECODING METHOD, ENCODING DEVICE AND DECODING DEVICE

Title (de)

KODIERVERFAHREN, DEKODIERVERFAHREN, KODIERVORRICHTUNG UND DEKODIERVORRICHTUNG

Title (fr)

PROCÉDÉ DE CODAGE, PROCÉDÉ DE DÉCODAGE, DISPOSITIF DE CODAGE ET DISPOSITIF DE DÉCODAGE

Publication

EP 2464018 A1 20120613 (EN)

Application

EP 10806251 A 20100806

Priority

  • JP 2009183791 A 20090806
  • JP 2009192627 A 20090821
  • JP 2010004966 W 20100806

Abstract (en)

A coding method according to an implementation of the present invention includes: transforming an input signal to generate a transformed output signal (S110); quantizing the transformed output signal to generate a quantized coefficient (S120); and entropy coding the quantized coefficient to generate a coded signal (S130), and the transforming (S110) includes: generating a first transformed output signal by performing a first transform on the input signal using a first transform coefficient (S112); and generating a second transformed output signal by performing, using a second transform coefficient, a second transform on a first partial signal that is a part of the first transformed output signal (S116), and in the entropy coding (S130), the second transform coefficient or a second inverse transform coefficient is compression coded by calculating a difference between a predetermined value and an element included in the second transform coefficient or a second inverse transform coefficient, and compression coding the calculated difference.

IPC 8 full level

H03M 7/30 (2006.01); H04N 7/26 (2006.01); H04N 7/30 (2006.01); H04N 7/32 (2006.01)

CPC (source: EP KR)

H03M 7/30 (2013.01 - EP); H04N 19/122 (2014.11 - EP); H04N 19/13 (2014.11 - KR); H04N 19/132 (2014.11 - KR); H04N 19/176 (2014.11 - EP); H04N 19/18 (2014.11 - EP); H04N 19/196 (2014.11 - EP); H04N 19/60 (2014.11 - KR)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

DOCDB simple family (publication)

EP 2464018 A1 20120613; EP 2464018 A4 20120801; CN 102577131 A 20120711; JP WO2011016251 A1 20130110; KR 20120046729 A 20120510; TW 201134225 A 20111001; US 2012127002 A1 20120524; WO 2011016251 A1 20110210

DOCDB simple family (application)

EP 10806251 A 20100806; CN 201080034312 A 20100806; JP 2010004966 W 20100806; JP 2011525802 A 20100806; KR 20127002960 A 20100806; TW 99126301 A 20100806; US 201013388064 A 20100806